inadvertent language switch during breakpoint_re_set_one

[deliverable/binutils-gdb.git] / gdb / aarch64-linux-tdep.c

diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 50c9c3f60f3ae7cb71e2f38b501b0436de9d5c6f..96dc8a11329df6d5560cb29177585832c45d48d3 100644 (file)
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux AArch64.
 
-   Copyright (C) 2009-2016 Free Software Foundation, Inc.
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
    Contributed by ARM Ltd.
 
    This file is part of GDB.
@@ -45,6 +45,8 @@
 
 #include "record-full.h"
 #include "linux-record.h"
+#include "auxv.h"
+#include "elf/common.h"
 
 /* Signal frame handling.
 
@@ -143,7 +145,6 @@ aarch64_linux_sigframe_init (const struct tramp_frame *self,
                             struct trad_frame_cache *this_cache,
                             CORE_ADDR func)
 {
-  struct gdbarch *gdbarch = get_frame_arch (this_frame);
   CORE_ADDR sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM);
   CORE_ADDR sigcontext_addr =
     sp
@@ -232,6 +233,21 @@ aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
       NULL, cb_data);
 }
 
+/* Implement the "core_read_description" gdbarch method.  SVE not yet
+   supported.  */
+
+static const struct target_desc *
+aarch64_linux_core_read_description (struct gdbarch *gdbarch,
+                                    struct target_ops *target, bfd *abfd)
+{
+  CORE_ADDR aarch64_hwcap = 0;
+
+  if (target_auxv_search (target, AT_HWCAP, &aarch64_hwcap) != 1)
+    return NULL;
+
+  return aarch64_read_description (0);
+}
+
 /* Implementation of `gdbarch_stap_is_single_operand', as defined in
    gdbarch.h.  */
 
@@ -290,7 +306,7 @@ aarch64_stap_parse_special_token (struct gdbarch *gdbarch,
               regname, p->saved_arg);
 
       ++tmp;
-      tmp = skip_spaces_const (tmp);
+      tmp = skip_spaces (tmp);
       /* Now we expect a number.  It can begin with '#' or simply
         a digit.  */
       if (*tmp == '#')
@@ -361,7 +377,7 @@ aarch64_linux_get_syscall_number (struct gdbarch *gdbarch,
   LONGEST ret;
 
   /* Getting the system call number from the register x8.  */
-  regcache_cooked_read (regs, AARCH64_DWARF_X0 + 8, buf);
+  regs->cooked_read (AARCH64_DWARF_X0 + 8, buf);
 
   ret = extract_signed_integer (buf, X_REGISTER_SIZE, byte_order);
 
@@ -673,17 +689,14 @@ aarch64_canonicalize_syscall (enum aarch64_syscall syscall_number)
       SYSCALL_MAP (fremovexattr);
       SYSCALL_MAP (getcwd);
       SYSCALL_MAP (lookup_dcookie);
-      UNSUPPORTED_SYSCALL_MAP (eventfd2);
-
-    case aarch64_sys_epoll_create1:
-      return gdb_sys_epoll_create;
-
+      SYSCALL_MAP (eventfd2);
+      SYSCALL_MAP (epoll_create1);
       SYSCALL_MAP (epoll_ctl);
       SYSCALL_MAP (epoll_pwait);
       SYSCALL_MAP (dup);
-      UNSUPPORTED_SYSCALL_MAP (dup3);
+      SYSCALL_MAP (dup3);
       SYSCALL_MAP (fcntl);
-      UNSUPPORTED_SYSCALL_MAP (inotify_init1);
+      SYSCALL_MAP (inotify_init1);
       SYSCALL_MAP (inotify_add_watch);
       SYSCALL_MAP (inotify_rm_watch);
       SYSCALL_MAP (ioctl);
@@ -703,7 +716,7 @@ aarch64_canonicalize_syscall (enum aarch64_syscall syscall_number)
       SYSCALL_MAP (statfs);
       SYSCALL_MAP (truncate);
       SYSCALL_MAP (ftruncate);
-      UNSUPPORTED_SYSCALL_MAP (fallocate);
+      SYSCALL_MAP (fallocate);
       SYSCALL_MAP (faccessat);
       SYSCALL_MAP (fchdir);
       SYSCALL_MAP (chroot);
@@ -714,7 +727,7 @@ aarch64_canonicalize_syscall (enum aarch64_syscall syscall_number)
       SYSCALL_MAP (openat);
       SYSCALL_MAP (close);
       SYSCALL_MAP (vhangup);
-      UNSUPPORTED_SYSCALL_MAP (pipe2);
+      SYSCALL_MAP (pipe2);
       SYSCALL_MAP (quotactl);
       SYSCALL_MAP (getdents64);
       SYSCALL_MAP (lseek);
@@ -989,6 +1002,15 @@ aarch64_linux_syscall_record (struct regcache *regcache,
   return 0;
 }
 
+/* Implement the "gcc_target_options" gdbarch method.  */
+
+static char *
+aarch64_linux_gcc_target_options (struct gdbarch *gdbarch)
+{
+  /* GCC doesn't know "-m64".  */
+  return NULL;
+}
+
 static void
 aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
@@ -1022,6 +1044,8 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   set_gdbarch_iterate_over_regset_sections
     (gdbarch, aarch64_linux_iterate_over_regset_sections);
+  set_gdbarch_core_read_description
+    (gdbarch, aarch64_linux_core_read_description);
 
   /* SystemTap related.  */
   set_gdbarch_stap_integer_prefixes (gdbarch, stap_integer_prefixes);
@@ -1039,6 +1063,11 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* Syscall record.  */
   tdep->aarch64_syscall_record = aarch64_linux_syscall_record;
 
+  /* The top byte of a user space address known as the "tag",
+     is ignored by the kernel and can be regarded as additional
+     data associated with the address.  */
+  set_gdbarch_significant_addr_bit (gdbarch, 56);
+
   /* Initialize the aarch64_linux_record_tdep.  */
   /* These values are the size of the type that will be used in a system
      call.  They are obtained from Linux Kernel source.  */
@@ -1208,15 +1237,12 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_gdbarch_displaced_step_copy_insn (gdbarch,
                                        aarch64_displaced_step_copy_insn);
   set_gdbarch_displaced_step_fixup (gdbarch, aarch64_displaced_step_fixup);
-  set_gdbarch_displaced_step_free_closure (gdbarch,
-                                          simple_displaced_step_free_closure);
   set_gdbarch_displaced_step_location (gdbarch, linux_displaced_step_location);
   set_gdbarch_displaced_step_hw_singlestep (gdbarch,
                                            aarch64_displaced_step_hw_singlestep);
-}
 
-/* Provide a prototype to silence -Wmissing-prototypes.  */
-extern initialize_file_ftype _initialize_aarch64_linux_tdep;
+  set_gdbarch_gcc_target_options (gdbarch, aarch64_linux_gcc_target_options);
+}
 
 void
 _initialize_aarch64_linux_tdep (void)